1400202420 has 48 divisors (see below), whose sum is σ = 4047042048. Its totient is φ = 361342080.

The previous prime is 1400202383. The next prime is 1400202481. The reversal of 1400202420 is 242020041.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1400202420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374539 + ... + 378258.

It is an arithmetic number, because the mean of its divisors is an integer number (84313376).

Almost surely, 2^1400202420 is an apocalyptic number.

1400202420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400202420 is an abundant number, since it is smaller than the sum of its proper divisors (2646839628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1400202420 is a wasteful number, since it uses less digits than its factorization.

1400202420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752840 (or 752838 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 1400202420 is about 37419.2787210016. The cubic root of 1400202420 is about 1118.7428549631.

Adding to 1400202420 its reverse (242020041), we get a palindrome (1642222461).

The spelling of 1400202420 in words is "one billion, four hundred million, two hundred two thousand, four hundred twenty".